Electrical Engineering Questions And Answers :: Dc Generators: part2



Electrical Engineering : Dc Generators QUESTIONS AND ANSWERS :: part2 : 6 to 10

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

6.The voltage drop for which of the following types of brush can be expected to be least ?

Graphite brushes
Carbon brushes
Metal graphite brushes
None of the above

7.For a D.C. machines laboratory following type of D.C. supply will be suitable

rotary converter
mercury are rectifier
induction motor D.C. generator set
synchronous motor D.C. generator set

8.The number of brushes in a commutator depends on

speed of armature
type of winding
voltage
amount of current to be collected

9.Which of the following statement about D.C. generators is false ?

Compensating winding in a D.C. machine helps in commutation
In a D. C. generator interpoles winding is connected in series with the armature winding
Back pitch and front pitch are both odd and approximately equal to the pole pitch
Equilizing bus bars are used with parallel running of D.C. shunt generators

10.The demagnetising component of armature reaction in a D.C. generator

reduces generator e.m.f.
increases armature speed
reduces interpoles flux density
results in sparking trouble

More Dc Generators QUESTIONS AND ANSWERS available in next pages

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